Monday, January 29, 2007

New kind of trilobite

This rather nasty and ugly bugger turned up while last fall's fossil crop was being cleaned. Not pretty, but it is something completely new.For the lay person, it's a trilobite that looks like a blend of two other ones, a "missing link"For the trilo fans, it's a lower Bobcaygeon Fm. (Middle Ordovician) cheirurid that was found in a unit that contains fairly common Gabriceraurus and has the general shape and the spine configuration of that trilobite, but has the pustulation of a Bufoceraurus. 3.5"Found in Ottawa, On.